<template>
  <div>

    <!-- 1.定义面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 2.定义卡片视图 -->
    <el-card class="box-card">

      <!-- 3.定义栅格的一行 :gutter="20"定义行间距   :span="9" 占位符  -->
      <el-row :gutter="20">
        <el-col :span="9">
          <!-- 3.定义搜索框 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <!-- 定义添加按钮-->
          <el-button type="primary" @click="dialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户数据表格展现  border 边框线属性  stripe 隔行变色
            type="index" 表格的索引值从1开始
       -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="序号"></el-table-column>
        <el-table-column prop="username" label="用户名"></el-table-column>
        <el-table-column prop="phone" label="电话"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="status" label="状态">
          <!-- 定义作用域插槽,如果需要获取数据 通过 scope.row的方式获取  -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.status" @change="updateStatus(scope.row)" active-color="#13ce66"
              inactive-color="#ff4949">
            </el-switch>
          </template>

        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="small" @click="updateUserBtn(scope.row)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="small" @click="deleteUser(scope.row)"></el-button>
          </template>

        </el-table-column>
      </el-table>

      <!-- 定义分页组件 关于分页插件的属性说明
            1.@size-change 如果分页中每页实现的条数发生变化 则会触发这个该事件
            2.@current-change 当页数发生改变时,触发该函数
            3.current-page 当前选中的页
            4.page-sizes   页面数据展现的选项
            5.page-size    默认选中的页数
            6.layout    分页中展现的数据种类
            7.total     记录总数
       -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pageNum" :page-sizes="[5, 10, 20, 40]" :page-size="queryInfo.pageSize"
        layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>

    <!-- 编辑用户新增对话框 visible.sync 控制对话框的显示-->
    <el-dialog title="添加用户" :visible.sync="dialogVisible" width="50%" @close="closeDialog">

      <!-- 定义用户提交表单数据-->
      <el-form :model="addUserModel" :rules="rules" ref="addUserRef" label-width="100px" class="demo-ruleForm">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addUserModel.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addUserModel.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="密码确认" prop="password2">
          <el-input v-model="addUserModel.password2" type="password"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="phone">
          <el-input v-model="addUserModel.phone"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addUserModel.email"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUserBtn">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 定义修改页面 当对话框关闭时,将表格数据重置-->
    <el-dialog title="修改用户" :visible.sync="updateDialogVisible" width="50%" @close="closeUpdateDialog">
      <!-- 定义用户提交表单数据-->
      <el-form :model="updateUserModel" :rules="rules" ref="updateUserRef" label-width="100px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="updateUserModel.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="phone">
          <el-input v-model="updateUserModel.phone"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="updateUserModel.email"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="updateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="updateUser">确 定</el-button>
      </span>
    </el-dialog>


  </div>
</template>

<script>
  export default {
    data() {
      //校验邮箱规则 rule校验规则   value校验的数据   callback回调函数
      const checkEmail = (rule, value, callback) => {
        //定义邮箱的正则表达式  JS中用/来表示正则表达式的开始和结束
        const emailRege = /^[a-zA-Z0-9-_]+@[a-zA-Z0-9-_]+\.[a-zA-Z0-9-_]+$/
        //正则表达式语法校验  test(xx) 校验成功 返回true  校验失败返回false
        if (emailRege.test(value)) {
          //表示邮箱合法 正确返回
          return callback()
        }
        callback(new Error('请填写正确的邮箱地址'))
      }

      //校验手机号的邮箱规则
      const checkPhone = (rule, value, callback) => {

        //定义校验手机号的正则语法
        const phoneRege = /^1[34578][0-9]{9}$/
        if (phoneRege.test(value)) {

          return callback()
        }
        callback(new Error('请填写正确的手机号'))

      }

      const checkPassword = (rule, value, callback) => {
        if (this.addUserModel.password !== value) return callback(new Error('2次密码输入不一致'))
        //否则校验成功
        callback()
      }

      return {
        queryInfo: {
          query: '',
          pageNum: 1,
          pageSize: 5
        },
        userList: [],
        //记录总数是数值类型
        total: 0,
        dialogVisible: false,
        addUserModel: {
          username: '',
          password: '',
          password2: '',
          email: '',
          phone: ''
        },
        //数据校验规则
        rules: {
          username: [{
              required: true,
              message: '请输入用户名',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 30,
              message: '长度在 3 到 30 个字符',
              trigger: 'blur'
            }
          ],
          password: [{
              required: true,
              message: '请输入密码',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 30,
              message: '长度在 3 到 30 个字符',
              trigger: 'blur'
            }
          ],
          password2: [{
              required: true,
              message: '请输入密码',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 30,
              message: '长度在 3 到 30 个字符',
              trigger: 'blur'
            },
            {
              validator: checkPassword,
              trigger: 'blur'
            }
          ],
          phone: [{
              required: true,
              message: '请输入手机号',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 30,
              message: '长度在 3 到 30 个字符',
              trigger: 'blur'
            },
            {
              validator: checkPhone,
              trigger: 'blur'
            }
          ],
          email: [{
              required: true,
              message: '请输入邮箱',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 30,
              message: '长度在 3 到 30 个字符',
              trigger: 'blur'
            },
            {
              validator: checkEmail,
              trigger: 'blur'
            }
          ]
        },
        updateDialogVisible: false,
        //定义修改用户数据封装
        updateUserModel: {} 
      }

    },
    methods: {
      async getUserList() {
        const {
          data: result
        } = await this.$http.get('/user/list', {
          params: this.queryInfo
        })
        if (result.status !== 200) return this.$message.error("用户列表查询失败")
        //{query: "", pageNum: 1, pageSize: 5, total: 7, rows: Array(5)}
        this.userList = result.data.rows
        this.total = result.data.total
      },
      async updateStatus(user) {
        //实现用户状态修改  注意使用模版字符串  ES6中提出的新用法 ${key}
        //const {data: result} = this.$http.put('/user/status/'+user.id+'/'+user.status)
        const {
          data: result
        } = await this.$http.put(`/user/status/${user.id}/${user.status}`)
        if (result.status !== 200) return this.$message.error("用户状态修改失败!")
        this.$message.success("用户状态修改成功!")
      },
      //如果调用分页的结构,则会自动的传递pageSize数据..
      handleSizeChange(pageSize) {
        console.log("每页展现的条数" + pageSize)
        this.queryInfo.pageSize = pageSize
        this.getUserList()
      },
      //根据用户的页数重新查询数据库.
      handleCurrentChange(pageNum) {
        console.log("页数:" + pageNum)
        this.queryInfo.pageNum = pageNum
        this.getUserList()
      },
      closeDialog() {
        //重置表格数据
        this.$refs.addUserRef.resetFields()
      },
      //校验用户数据
      addUserBtn() {
        this.$refs.addUserRef.validate(async valid => {
          //如果校验失败 则停止数据
          if (!valid) return
          //console.log(this.addUserModel)
          const {
            data: result
          } = await this.$http.post('/user/addUser', this.addUserModel)
          if (result.status !== 200) return this.$message.error("用户新增失败")
          this.$message.success("用户新增成功")
          //关闭对话框
          this.dialogVisible = false
          //重新获取用户列表
          this.getUserList()

        })
      },
      async updateUserBtn(user) {
        this.updateDialogVisible = true
        const {
          data: result
        } = await this.$http.get("/user/" + user.id)
        if (result.status !== 200) return this.$message.error("用户查询失败")
        this.updateUserModel = result.data
      },
      closeUpdateDialog() {
        //重置表格数据
        this.$refs.updateUserRef.resetFields()
      },
      updateUser() {
        //1.预校验数据
        this.$refs.updateUserRef.validate(async valid => {
          if (!valid) return this.$message.error("表单验证没有通过")
          //根据接口文档要求封装数据
          let user = {}
          user.id = this.updateUserModel.id
          user.phone = this.updateUserModel.phone
          user.email = this.updateUserModel.email
          const {
            data: result
          } = await this.$http.put(`/user/updateUser`, user)
          if (result.status !== 200) return this.$message.error("用户修改失败")
          this.$message.success("用户更新成功")
          this.updateDialogVisible = false
          this.getUserList()
        })
      },
      async deleteUser(user) {
        //1.消息确认框
        const result = await this.$confirm('此操作将永久删除 ' + user.username + ', 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(error => error) //接收error参数,并且返回error
        //确定: confirm  取消: cancel
        //console.log(result)

        //如果确认  confirm  如果取消 cancel
        if (result !== 'confirm') {
          //如果程序点击取消,则终止代码
          return this.$message.info("删除取消")
        }
        const {
          data: result2
        } = await this.$http.delete(`/user/${user.id}`)
        if (result2.status !== 200) return this.$message.error("删除失败")
        this.$message.success("删除成功")
        //重新加载 数据
        this.getUserList()
      }
    },
    //利用钩子函数实现数据查询
    mounted() {
      this.getUserList()
    }
  }
</script>


<style lang="less" scoped>

</style>
